Quote Originally Posted by Tyreal
I think it's more than possible that Ace's death (or Ace being about to be killed) could help release his enormous haki.
Not to mention it would put a stop to those DBZ comparisons amirite?

Quote Originally Posted by poopdeville
On the one hand, you are absolutely correct. On the other, I don't think Luffy has any sort of "knock out" power unless he's yelling something passionately.
You're confusing shonen powerups with Haki.